Improvement in ice-machines



S. B. MARTIN.

l Ice-Machines. 910.1503477, Patented May 5,1874.

PATENT OFFICFo ,y sAMUFL R. MARTIN, oF sAN FRANCIsCo, CALIFORNIA.

lMPR-ovEMENT |N ICE-MAci-HNES.

Specification forming part of`.Letters Patent No. 150,477, dated May 5,1874; application filed i October Q0, 1873.

To all whom it may concern: i A

Be it known that I, SAMUEL B. MARTIN, of San Francisco, in the county ofSan Francisco and State of California, have invented an Improved Processand Apparatus for the Manufacture of Ice and other like purposes; and Ido hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings and -to the letters of reference marked thereon.

tion with sides of tanks removed. Fig. 2 is a transverse view of thedouble condensing-pipe of the coil.

My apparatus consists of a supply-tank, A, above, and a shallow tank, B,underneath, the refrigerating-coil of pipes, and also a tank, C, of likedescription under the condensing-coil D. The congealer or refrigerator Eis composed of a coil of pipes of graduated diameter, that nearest tothe top being the smallest in diameter, and4 extends to the point a,from whence it connects with a pipe of greater diameter to the point al,from thence still larger to the point of connection a2, from which pointthe size is maintained, forming one or more coils upon the bottom of thetank, and passing to the pump F. The upper end of this coil passes downthrough the bottom of the tank to the receiver G. By-thus constructingthe congealer-coil of pipes of different sizes, it is intended toequalize the flow of gas and liquid throughout thecoil by providing roomfor the expansion of the gas, which follows from contact with thetemperature of the water to be This agent cooled or frozen, and therebyeffect a uniform temperature over all parts of the coil. In the centerof this goil is an upright post, b, on the top of which is placed awheel, b1, which, by means of water from the tank A through a pipe, c,impinging lupon the radial vertical arms b2, causes it to rotate andcarry with it a pipe, cl, having a crescent-shaped sprinkler,

cl, whereby Water is caused to ow out and .one above described. Thiswheel derives its supply of water from the tank B through the pipe f,which passes up through the innerpipe of the double condensing-coil andthe pipe e upon the Wheel, which causes it to rotate, and expel therefrigerated Water from the tank upon the said coil through the pipe f.This water, being of stilll ower temperature than when leaving the tankA, may be conveyed back to the tank to be used over again.

In ope-rating my machine, the refrigerating or congealer coil is chargedwith a volatile uidorgasfromaretort. `(Notshown.) Themachinery and pumpbeing put in motion, the vapor is drawn through the coil E by the pumpF, and forced out through pipe ginto the double condensing-coil, throughwhich it passes to the receiver G,'Which it entersin aliquid state. Whena sufficient charge of the liquid is accumulated in the receiver-say, tothe extent of abouttwo-thirds of the capacity-cock j being opened, theliquid flows through pipe h to the .refrigerating-coil, is therevaporized, extracting heat from the Water flowing over vthe coil, and isagain returned in the same manner, and liquelied, as before, for usecontinuously. When it is desired to loosen the ice formed on thecongealer-coil, it is only neces- .saryfto open the cock Z on pipe rlhisallows the warm gas to pass into the congealer-coil under the highpressure of the condenser, when, by Working the pump slowly, the objectwill soon be accomplished, and the ice, after being divided into blocksof the size desired, may be removed.

Having thus described my invention, What I clailn as new, and desire tosecure by Letters Patent, is-

1. The congealer E, consisting of a coil of pipes gradually increasingin diameter, to permit the expansion of freezing liquid into gas,substantially as described.

2. The congealer E, and the spraying apparatus d d', combined andarranged as described, for the purpose set forth.

3. The combination of the tank B and pipe 'y f with the condenser D,Wheel b4, and pipe f', j

the parts being so arranged thatthe refrigersurplus water to assist inthe condensation of the gas, as described.

In Witness whereof hand and seal.

sAML. B. MARTIN. [1.. s]

Witnesses F. J. THIBAULT, JAs. MASON.

I have hereunto set my

